Top definition
Facebook users who seem like cool peeps in person, but get hostile and obsessive while on Facebook. The "facebook mood swings" between mania and depression can be very abrupt.
Facebook Posts:

Rachael Ray: I am perfect. Everyone should be like me!

Lindsay Lohan: I'm pretty cool too!

Rachael Ray: NO! You aren't me. Everything I say is right. If you disagree with me you are wrong.

Rachael Ray:I will now post a recipe for the perfect life, mine. ;) Hope this pisses you off!

Lindsay Lohan: I think you are Facebook bipolar!

Rachael Ray: What? I had a *winking smiley face* you can't get mad if I put a smiley face!
by ghettomomsrus August 10, 2010
Happy St. Patties Day!
When you react to several Facebook posts in a row using different emojis.
Dude, are you alright? I saw you reacted to a bunch of posts on Facebook last night. You liked one, loved another, then you angry faced like 10 in a row...

Yeah man, I was just drunk.

Careful, cuz people are gonna think you are Facebook Bipolar.
by Scott B. Foresman February 10, 2018
Happy St. Patties Day!